拍摄LinearLayout和RecyclerView的屏幕截图

// 拍摄LinearLayout的屏幕截图
LinearLayout linearLayout = findViewById(R.id.linearLayout);
Bitmap linearLayoutBitmap = Bitmap.createBitmap(linearLayout.getWidth(), linearLayout.getHeight(), Bitmap.Config.ARGB_8888);
Canvas linearLayoutCanvas = new Canvas(linearLayoutBitmap);
linearLayout.draw(linearLayoutCanvas);
// 保存为图片文件
saveBitmapToFile(linearLayoutBitmap, "linear_layout_screenshot.jpg");

// 拍摄RecyclerView的屏幕截图
RecyclerView recyclerView = findViewById(R.id.recyclerView);
Bitmap recyclerViewBitmap = Bitmap.createBitmap(recyclerView.getWidth(), recyclerView.getHeight(), Bitmap.Config.ARGB_8888);
Canvas recyclerViewCanvas = new Canvas(recyclerViewBitmap);
recyclerView.draw(recyclerViewCanvas);
// 保存为图片文件
saveBitmapToFile(recyclerViewBitmap, "recycler_view_screenshot.jpg");

// 保存Bitmap对象为图片文件
private void saveBitmapToFile(Bitmap bitmap, String fileName) {
    File file = new File(getExternalFilesDir(null), fileName);
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(file);
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
        fos.flush();
        fos.close();
    } catch (IOException e) {
        e.printStackTrace();
    }
}